Another theme is character adaptation. Katakuri has to adapt to new environments, cultures, and rules in crossover fanfics. This can lead to some really interesting character development. For instance, in a crossover with a post - apocalyptic world, he might have to change his moral code to survive. This theme is important as it shows different sides of Katakuri's character.
The character interactions are quite special. For example, Naruto's positive and energetic nature contrasts with Katakuri's more reserved and powerful presence. Writers often use this contrast to create interesting dialogues and plot developments in the fanfiction.
Maybe an ancient sage in Naruto's own world who has long - been in seclusion. This sage has knowledge of different power systems beyond just chakra. He notices Naruto's pure heart and strong will and decides to pass on his knowledge of haki to Naruto, believing that Naruto can use it for the greater good of the ninja world.
In 'naruto haki fanfic', Haki can change the Naruto universe by adding a new layer of power. For example, it can make battles more complex as characters now have to consider both chakra and Haki. It might also change the way characters interact with each other, as those with Haki could sense things differently.
Percy often uses Observation Haki to anticipate the attacks of his enemies. He can sense their movements and intentions, which gives him an edge in combat, especially against fast - moving or sneaky foes like some of the monsters in the Percy Jackson world.
Another theme is the exploration of an unlikely relationship. Katakuri is a unique character, and the idea of him being in a relationship with an ordinary reader is an interesting concept. Fanfictions often explore how they bridge the gap between their different worlds. It could be about the reader learning about Katakuri's world of pirates and vice versa.
One idea could be a story where a new character, the OC, is a young chef who idolizes Katakuri. They enter a cooking competition in the Big Mom Pirates' territory and Katakuri takes notice. The OC tries to prove themselves worthy of his respect through their cooking skills.
I think Conqueror's Haki would suit Naruto. He has that natural leadership and strong will, just like characters in One Piece who possess Conqueror's Haki. It would be a great addition to his existing confident and determined personality.
Haki can completely shift the power dynamics. If a character like Ron suddenly discovers Haki, he could become a much more formidable opponent. He might be able to use it to intimidate Death Eaters or other dark wizards, adding an edge to his character that wasn't there before.
In some fanfictions, Naruto might discover haki during a particularly intense battle. Maybe when facing an enemy with an unusual power that his regular jutsu can't handle, he unknowingly taps into his latent haki ability.